Need 200 Micro-ATX motherboards:integrated audio, video, sound and LAN - USB pin connectors - Audio andvideo board pin connectors for front panel - I/O plates - 100 pcs AMDSocket A (462) Athlon XP boards that support 1600+ to 2800+ - 100 pcsIntel Socket 478 with support for 1.6 Ghz to 2.8 Ghz and Celeron D(prefer as many 800 Mhz front side bus as possible (backward compatible533 and 400), min spec is 533 Mhz fron side bus with backward supportfor 400 Mhz) Used and refurbished is fine as long as they are testedand warranteed.